Streszczenie:

The multispiked connecting scaffold (MSC-Scaffold) prototype, inspired by the biological system of anchorage of the articular
cartilage in the periarticular trabecular bone by means of subchondral bone interdigitations, is the essential innovation in
fixation of the bone in resurfacing arthroplasty (RA) endoprostheses. The biomimetic MSC‐Scaffold, due to its complex
geometric structure, can be manufactured only using additive technology, for example, selective laser melting (SLM). The
major purpose of this work is determination of constructional possibilities for the structural-geometric functionalization
of SLM‐manufactured MSC‐Scaffold prototype, compensating the reduced ability-due to the SLM technological limitations—to
accommodate the ingrowing bone filling the interspike space of the prototype, which is important for the prototype
bioengineering design. Confocal microscopy scanning of components of the SLM‐manufactured prototype of total hip
resurfacing arthroplasty (THRA) endoprosthesis with the MSC‐Scaffold was performed. It was followed by the geometric
measurements of a variety of specimens designed as the fragments of the MSC-Scaffold of both THRA endoprosthesis
components. The reduced ability to accommodate the ingrowing bone tissue in the SLM‐manufactured prototypes versus
that in the corresponding CAD models has been quantitatively determined. Obtained results enabled to establish a way of
compensatory structural‐geometric functionalization, allowing the MSC‐Scaffold adequate redesigning and manufacturing in
additive SLM technology.